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浙江大学学报(理学版)  2017, Vol. 44 Issue (6): 705-710    DOI: 10.3785/j.issn.1008-9497.2017.06.009
数学与计算机科学     
一种基于离散插值的多项式曲线逼近有理曲线的方法
李光耀, 杨连喜, 徐晨东
宁波大学 理学院, 浙江 宁波 315211
A method on polynomial curve approximation of rational curves based on the discrete interpolation
LI Guangyao, YANG Lianxi, XU Chendong
Faculty of Science, Ningbo University, Ningbo 315211, Zhejiang Province, China
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摘要: 提出了一种用多项式曲线插值逼近有理曲线的方法.首先,构造一条含参数的多项式曲线,令其插值于有理曲线的一些固定点处,求解相应的方程得到待定参数的值,从而确定多项式插值曲线.然后,采用离散的Hausdorff距离计算插值曲线与有理曲线之间的误差,典型数值算例表明,本文方法具有较好的可行性.
关键词: 有理曲线多项式曲线插值结式方法Hausdorff距离    
Abstract: This paper presents a method for interpolating rational curves with polynomial curves. Firstly, we construct a polynomial curve with some undetermined parameters, and let this polynomial curve interpolate the given rational curve at some fixed points. By solving the corresponding equation of undetermined parameters, a suitable polynomial interpolation curve is formed. The error between the rational curve and the polynomial interpolation curve is estimated based on discrete Hausdorff distance. Some typical numerical examples illustrate the effectiveness of this method.
Key words: rational curve    polynomial curve    interpolation    resultant method    Hausdorff distance
收稿日期: 2016-05-25 出版日期: 2018-04-09
CLC:  O241.5  
基金资助: 国家自然科学基金资助项目(11101230,11371209).
通讯作者: 徐晨东,ORCID:http://orcid.org/0000-0002-2759-4123,E-mail:xuchendong@nbu.edu.cn.     E-mail: xuchendong@nbu.edu.cn
作者简介: 李光耀(1991-),ORCID:http://orcid.org/0000-0001-6205-4803,男,硕士研究生,主要从事计算几何研究.
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引用本文:

李光耀, 杨连喜, 徐晨东. 一种基于离散插值的多项式曲线逼近有理曲线的方法[J]. 浙江大学学报(理学版), 2017, 44(6): 705-710.

LI Guangyao, YANG Lianxi, XU Chendong. A method on polynomial curve approximation of rational curves based on the discrete interpolation. Journal of ZheJIang University(Science Edition), 2017, 44(6): 705-710.

链接本文:

https://www.zjujournals.com/sci/CN/10.3785/j.issn.1008-9497.2017.06.009        https://www.zjujournals.com/sci/CN/Y2017/V44/I6/705

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